Vehicle rigidity-adjustable vibration isolation device and rigidity adjusting method thereof

Abstract

The invention discloses a rigidity-adjustable vibration isolation device for a vehicle and a rigidity adjusting method of the rigidity-adjustable vibration isolation device. The device comprises a installation bracket, the installation bracket is provided with a installation hole used for being fixed on a vehicle body; a positioning ferrule, a driving motor and a bushing arranged in the positioning ferrule are arranged on the installation bracket; an inner ring used for being connected with an engine is arranged in the center of the lining, a lining gear is connected to the outer edge of the lining and located outside the positioning ferrule, and a motor gear meshed with the lining gear and used for driving the lining gear to rotate is arranged on the motor. The rigidity can be adjusted according to the rotating speed of an engine, the good vibration isolation effect can be achieved within the full-rotating-speed range of the engine, the vibration isolation range is wide, and the NVH quality of an vehicle is improved; the development cost is reduced, the structure is compact, the arrangement space is small and adjustment is flexible.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an engine vibration isolation device with adjustable stiffness for a vehicle and a stiffness adjustment method thereof. Background technique [0002] As customers have higher and higher requirements for the NVH quality of cars, the vibration in the car has always affected the driving and riding experience of customers. Excessive vibration will lead to a decrease in the NVH level of the vehicle, which will cause customers to complain; in order to create comfort for customers The driving environment and riding environment can reduce vibration, and the engine mount is designed as a structure with adjustable stiffness. [0003] Existing engine vibration isolation mounts can only achieve a good vibration isolation effect at a certain engine speed, and cannot achieve a good vibration isolation effect in the entire speed range. The vibration isolation range is limited and cannot sol...

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Problems solved by technology

[0003] Existing engine vibration isolation mounts can only achieve a good vibration isolation effect at a certain engine speed, and cannot achieve a good vibration isolation effect in the entire speed range. The vibration isolation range is limited and cannot solve the problem of the engine at different speeds. Vibration isolation problem; as disclosed in Chinese patent CN105818666A, an engine mount with adjustable stiffness can be adjusted by increasing or decreasing the number of fixed mount main springs. The engine mount cannot be adjusted when it is installed on the vehicle body. The vibration isolation effect is good at a certain engine speed, but it cannot achieve a good vibration isolation effect in the entire speed range.

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